Inventor · disambiguated record
Katsuo Sakai
Also filed as: SAKAI KATSUO
37 granted patents·4 pending applications·967 citations·filing 1976–2007
98Inventor score
Files withRICOH KK33BEPPU TATSURO1KISO JIBAN CONSULTANTS CO LTD1MAEDA YOSHITO1NAT INST OF ADVANCED IND SCIEN1
Top patents by PatentIndex Score
41 records- 0197US4933727AColor recording apparatusRICOH KK·Filed 1989·Granted Jun 12, 1990·72 cites·9 claims
- 0296US7308222B2Toner supplying system for an image forming apparatusRICOH KK·Filed 2006·Granted Dec 11, 2007·29 cites·20 claims
- 0396US6708014B2Electrostatic transportation device, development device and image formation apparatusRICOH KK·Filed 2002·Granted Mar 16, 2004·66 cites·66 claims
- 0495US6901231B1Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereofRICOH KK·Filed 2003·Granted May 31, 2005·48 cites·64 claims
- 0595US6597884B2Image forming apparatus including electrostatic conveyance of charged tonerRICOH KK·Filed 2001·Granted Jul 22, 2003·79 cites·59 claims
- 0695US5121170ADevice for transporting sheet members using an alternating voltageRICOH KK·Filed 1991·Granted Jun 9, 1992·72 cites·25 claims
- 0794US7024142B2Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereofRICOH KK·Filed 2005·Granted Apr 4, 2006·16 cites·8 claims
- 0893US4189224ATwo color electrostatic copying machineRICOH KK·Filed 1978·Granted Feb 19, 1980·36 cites·17 claims
- 0989US8158313B2Image forming apparatus for forming a color image, and image forming method for forming a color imageTSUKAMOTO TAKEO·Filed 2006·Granted Apr 17, 2012·11 cites·7 claims
- 1089US7200352B2Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereofRICOH KK·Filed 2006·Granted Apr 3, 2007·8 cites·20 claims
- 1188US5204716ASide-free recording apparatusRICOH KK·Filed 1991·Granted Apr 20, 1993·39 cites·12 claims
- 1287US6947691B2Electrostatic transportation device, development device and image formation apparatusRICOH KK·Filed 2004·Granted Sep 20, 2005·24 cites·51 claims
- 1385US4664501AMethod of and apparatus for producing duplicates in colorRICOH KK·Filed 1985·Granted May 12, 1987·29 cites·6 claims
- 1484US4615607ADual-color copierRICOH KK·Filed 1984·Granted Oct 7, 1986·27 cites·8 claims
- 1582US5955228AMethod and apparatus for forming a powder imageRICOH KK·Filed 1997·Granted Sep 21, 1999·46 cites·14 claims
- 1681US7123864B2Developing device using electrostatic transport memberRICOH KK·Filed 2004·Granted Oct 17, 2006·19 cites·27 claims
- 1781US4250239AColor electrostatographic process and materialRICOH KK·Filed 1978·Granted Feb 10, 1981·19 cites·19 claims
- 1879US6398345B1Image forming method and an apparatus for the same, and a cleaning deviceRICOH KK·Filed 1998·Granted Jun 4, 2002·40 cites·29 claims
- 1979US4281051AThree color electrostatographic processRICOH KK·Filed 1979·Granted Jul 28, 1981·18 cites·4 claims
- 2076US4521502AColor recording methodRICOH KK·Filed 1982·Granted Jun 4, 1985·19 cites·6 claims
- 2174US7796294B2Image forming apparatus capable of a color image, and image forming method for forming a color imageRICOH KK·Filed 2006·Granted Sep 14, 2010·5 cites·14 claims
- 2274US4544935ARecording apparatusRICOH KK·Filed 1982·Granted Oct 1, 1985·21 cites·16 claims
- 2373US4655579AMulticolored image forming apparatusRICOH KK·Filed 1985·Granted Apr 7, 1987·28 cites·24 claims
- 2473US4335194ATwo color electrophotographic process and materialRICOH KK·Filed 1979·Granted Jun 15, 1982·24 cites·21 claims
- 2572US7236720B2Image forming apparatus and process cartridgeRICOH KK·Filed 2004·Granted Jun 26, 2007·12 cites·25 claims
- 2672US7187892B2Toner transport device for image-forming deviceRICOH KK·Filed 2004·Granted Mar 6, 2007·13 cites·51 claims
- 2770US6597887B2Duplex image transferring device using liquid toner developmentRICOH KK·Filed 2001·Granted Jul 22, 2003·12 cites·19 claims
- 2869US4806153AMethod and apparatus for investigating subsurface conditionsKISO JIBAN CONSULTANTS CO LTD·Filed 1987·Granted Feb 21, 1989·49 cites·2 claims
- 2969US4407917AInformation image synthesizing and copying methodRICOH KK·Filed 1979·Granted Oct 4, 1983·12 cites·9 claims
- 3068US7672604B2Image forming apparatus and image forming method using electrostatic transport and hoppingRICOH KK·Filed 2006·Granted Mar 2, 2010·3 cites·39 claims
- 3166US4045134APhotosensitive member for use in electrophotographic apparatus and method of manufacturing the sameRICOH KK·Filed 1976·Granted Aug 30, 1977·11 cites·10 claims
- 3264US4690541AColor electrophotographic copying processRICOH KK·Filed 1985·Granted Sep 1, 1987·21 cites·16 claims
- 3364US4310610ATwo color electrostatographic processRICOH KK·Filed 1979·Granted Jan 12, 1982·10 cites·6 claims
- 3464US4132477AOptical imaging system for electrophotographyRICOH KK·Filed 1976·Granted Jan 2, 1979·12 cites·8 claims
- 3561US4384033AProcess of synthesizing and recording imagesRICOH KK·Filed 1980·Granted May 17, 1983·11 cites·16 claims
- 3659US8043438B2Device for cleaning CVD device and method of cleaning CVD deviceNAT INST OF ADVANCED IND SCIEN·Filed 2004·Granted Oct 25, 2011·4 cites·1 claims
- 3749US2010024535A1Searching Method for Acquiring Ground InformationMAEDA YOSHITO·Filed 2007·Application pending·0 cites
- 3841US8277560B2CVD apparatus and method of cleaning the CVD apparatusSAKAI KATSUO·Filed 2003·Granted Oct 2, 2012·2 cites·6 claims
- 3940US2005252451A1Cvd apparatus having means for cleaning with fluorine gas and method of cleaning cvd apparatus with fluorine gasBEPPU TATSURO·Filed 2003·Application pending·0 cites
- 4038US2006201533A1Cvd apparatus and method for cleaning cvd apparatusRES INST OF INNOVATIVE TECH FO·Filed 2004·Application pending·0 cites
- 4135US2004255854A1Cvd apparatus and method of cleaning the cvd apparatusFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →